Petros Perselis is the VP of Global Customer Success at Endeavor Entrepreneur company Hack The Box, the fastest-growing hacking playground and cybersecurity community in the world. At HTB Petros leads a dedicated team that empowers over 800 enterprise, university, and government clients to enhance their cybersecurity capabilities.

Before Hack The Box, Petros was the Global Head of Customer Success at Cutover, a SaaS leader in human and machine orchestration, where he led the team that worked with existing clients to increase platform adoption and optimize value realization, leading to client satisfaction, commercial retention, and expansion. Petros has also held senior GTM roles at SAP Qualtrics and Medallia in their pre-IPO days. At SAP Qualtrics he set up the New York office and established the company's presence in the US Northeast region; at Medallia, Petros was instrumental in growing the teams in London and New York and worked with some of the largest clients in complex software transformation programs.

Petros holds a MSc in Management Science from Stanford University and a BSc in Electrical Engineering from Brown University.